Ioka is an unincorporated community in eastern Duchesne County, Utah, United States.

[1] The small farming community is located in a "little valley surrounded by bluffs" within the Uintah Basin, approximately 5 miles (8.0 km) northwest of Myton and about 7 miles (11 km) southwest of Roosevelt[2][3] It is located on the Uintah and Ouray Indian Reservation and was named after a Ute chief.

[3] The main (and the only paved) road in the community is Utah State Route 87 (SR‑87/Ioka Lane/West 3000 South), which runs east‑west through the community.

Route 191 at its eastern terminus at Ioka Junction, about the 2.8 miles (4.5 km) east of town.

[2][3] In 1908 a post office for the community was established, and remained in operation until 1944.